<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>Path Structure</title>
	<link rel="stylesheet" href="../css/style.css">
	<script type="text/javascript" src="../../dist/paper-full.js"></script>
	<script type="text/paperscript" canvas="canvas">
	var y = view.size.height / 2;
	var width = view.size.width;
	var vector = new Point({
		angle: 45,
		length: width / 5
	});
	var offset = width / 30;
	var handleTexts = [];
	var path = new Path({
		segments: [
			[[offset, y], null, vector.rotate(-90)],
			[[width / 2, y], vector.rotate(-180), vector],
			[[width - offset, y], vector.rotate(90), null]
		],
		fullySelected: true
	});

	function onMouseMove(event) {
		var point = event.point.clone();
		// Constrain the event point, to not cut off the text:
		if (point.y < 22)
			point.y = 22;
		if (point.y > view.size.height - 24)
			point.y = view.size.height - 24;
		var delta = point - view.center;
		for (var i = 0; i < 2; i++) {
			var curve = path.curves[i];
			curve.handle1.y = curve.handle2.y = delta.y * (i % 2 ? 1 : -1);
			var firstPoint = curve.point1 + curve.handle1;
			var secondPoint = curve.point2 + curve.handle2;
			handleTexts[i * 2].point = secondPoint -
					(firstPoint.y < y ? [0, 10] : [0, -18]);
			handleTexts[i * 2 + 1].point = firstPoint -
					(firstPoint.y < y ? [0, 10] : [0, -18]);
		}
	}

	project.currentStyle.fillColor = 'black';
	for (var i = 0; i < 3; i++) {
		var segment = path.segments[i];
		var text = new PointText({
			point: segment.point - [0, 10],
			content: i,
			fontSize: 12,
			justification: 'center'
		});
	}

	for (var i = 0; i < 2; i++) {
		var handleInText = new PointText({
			content: 'handleIn',
			fontSize: 12,
			justification: 'center'
		});
		handleTexts.push(handleInText);

		var handleOutText = new PointText({
			content: 'handleOut',
			fontSize: 12,
			justification: 'center'
		});
		handleTexts.push(handleOutText);
	}

	// Call onMouseMove once to correctly position the text items:
	onMouseMove({
		point: view.center + vector.rotate(-90)
	});
	</script>
</head>
<body>
	<canvas id='canvas' resize></canvas>
</body>
</html>
